A man's life falls apart as a result of his affliction with Obsessive Compulsive Disorder and Tourette's Syndrome in this touching and funny tale.
| Actor | Role |
|---|---|
 Michael SheenMark Furness | Mark Furness |
 Shirley HendersonCharlotte | Charlotte |
 Adrian BowerNathan | Nathan |
 Claudie BlakleyKathy | Kathy |
 Anastasia GriffithStevie | Stevie |
 Anton LesserCharles | Charles |
 Elliot CowanGareth | Gareth |
 Rupert YoungJosh | Josh |
 Bhasker PatelHasim | Hasim |
 Kika MarkhamGeraldine | Geraldine |
 Mercedes GrowerGemma | Gemma |
| JJohn O'MahonyDr. Dunphy | Dr. Dunphy |